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The 10th largest container carrier warns that 2015 will likely see capacity outpace demand for shipping.
The third-party logistics provider also cut its first quarter loss in half.
Recent growth of the Barcelona-based online freight forwarder has been propelled by $1.4 million in Series B funding.
Chicago-based SEKO has expanded in recent years into a full-service logistics provider with transportation, warehousing, supply chain, home delivery and e-commerce capabilities.
Announced on the heels of a port driver labor strike, Eco Flow will use "free-flow" to move containers out of terminals to off-dock yards.
Such an alliance could have a "competitive edge," according to industry consultant Drewry.